Definition: You are given a question on philosophy. You are also given 4 answer options (associated with "A", "B", "C", "D"), out of which only one is correct. You need to answer the question by selecting the correct option. You should only answer with the choice letter, not the whole answer.
Input: According to Kant, moral laws are:
(A)necessary and apply to all rational beings. (B)contingent and apply only to human beings. (C)culturally relative. (D)grounded in God’s commands.

A